@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix dcterms: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . pav:hasCurrentVersion . rdf:type skos:Concept ; dce:identifier "SDN:L22::NETT0069" ; dc:date "2011-10-21 14:18:49.0" ; dc:identifier "SDN:L22::NETT0069" ; dc:isVersionOf ; pav:authoredOn "2011-10-21 14:18:49.0" ; pav:version "1" ; void:inDataset ; owl:deprecated "false" ; owl:versionInfo "1" ; skos:altLabel "Nester ichthyoplankton system" ; skos:broader , , ; skos:definition "A 50 cm diameter circular net ring is mounted in a 53cm x 53 cm rectangular frame. The net is a cylinder-cone with 0.333 mm nylon mesh. The tow bridle is attached to a spreader bar to keep the net opening clear of the bridle and depressor attached to bottom of frame. It has two flowmeters: one inside the net and one outside. Usually towed at 3 knots. Mainly for catching larval fish. Similar to the Blackburn and Keith system. It has no opening/closing mechanism."@en ; skos:notation "SDN:L22::NETT0069" ; skos:note "accepted"@en ; skos:prefLabel "Horizontal ichthyoplankton tow-net system - Nester (1987)"@en .